Definitions

infirm

[in-furm] / ɪnˈfɜrm /

ADJECTIVE

sick, weak

Synonyms

STRONGEST

ailing anemic decrepit feeble frail ill insecure unstable

WEAK

anile debilitated delicate enfeebled failing faint faltering flimsy fragile halting irresolute laid low lame sensile shaky unsound unsubstantial vacillating wavering wobbly

Antonyms

STRONGEST

healthy sound strong

WEAK

firm hearty robust

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

You are buying peace of mind and financial support if you become infirm.

From MarketWatch • Jun. 1, 2026

The MoD has previously vowed to speed up the awards process after it was criticised for handling applications too slowly, particularly for elderly and infirm veterans.

From BBC • Feb. 18, 2026

Humanoid robots could assist the elderly or infirm.

From The Wall Street Journal • Oct. 8, 2025

Staples literally got the sick and infirm to stand up.

From Salon • Jun. 17, 2025

They go for zebras, gnus and water buffaloes, and not only the old or the infirm in a herd—full-grown members too.

From "Life of Pi" by Yann Martel

Vocabulary lists containing infirm

Things Fall Apart

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Negatives with "in"

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Feeling Faint: Synonyms for "Weak"

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